1

When I was using only Ubuntu 15.10, the boot time was very fast, it was about 15-20 seconds.

Recently I installed Kali-Linux rolling edition along side Ubuntu 15.10.
Afterwards the boot time of Ubuntu has drastically increased (Kali boots fast enough).
It takes almost 3 to 4 minutes -> "Ubuntu ....." loading.

  • My system partitions :

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I noticed that there is a gap of 72 Sec between line 971 to 972 in dmesg file.

I don't know why ?

Please help me to solve this problem.

Severus Tux
  • 10,126

2 Answers2

3

Boot from Ubuntu installation media.

Select Try Ubuntu without installing.

Step 1 : Reinstall the Ubuntu GRUB boot loader.

Open a terminal and execute :

sudo mount /dev/sda2 /mnt
sudo mount /dev/sda1 /mnt/boot/efi
for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done
sudo chroot /mnt
grub-install /dev/sda
update-grub  
exit

Step 2 : Correct the UUID entries in the fstab file.

Open another terminal and execute :

sudo blkid

Open another terminal and execute : 

sudo gedit /mnt/etc/fstab

Replace the UUID entries of sda1 | sda2 | sda3 | sda4

with those of the output given from the blkid command.

Close all terminals and reboot into Ubuntu operating system.

cl-netbox
  • 31,491
0

Re-install grub and update entire fstab is more then necessary! if you wand the ubuntu splash-screen in grub instead kali splash-screen, yes you can reinstall grub.

kali(debian) installer, when installed belong another distro, do not take care about there have an existing swap partition so the installer format it again; once the swap partition has been formatted the UUID has change!

The only necessary is up to date the UUID of swap partition in the fstab and in "/etc/initramfs-tools/conf.d/resume" and regenerate the initramfs to let hibernation work again.

AtomiX84
  • 1,231